/* ============================================================
   AZURE ERA — German-industrial style
   White + Deep Graphite + Tech Blue
   ============================================================ */
:root {
    --ink: #0e0f13;
    --ink-2: #1b1d24;
    --ink-3: #2a2d36;
    --steel: #4a4f5a;
    --steel-2: #6b7280;
    --steel-3: #9aa0ab;
    --line: #e3e5ea;
    --line-2: #d3d6dd;
    --bg: #ffffff;
    --bg-alt: #f4f5f7;
    --bg-alt-2: #eceef1;
    --blue: #0a5cff;
    --blue-dark: #0344c4;
    --blue-light: #e9f1ff;
    --accent: #0a5cff;
    --radius: 4px;
    --radius-lg: 8px;
    --container: 1280px;
    --gutter: 28px;
    --ease: cubic-bezier(0.22, 1, 0.36, 1);
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-spring: cubic-bezier(0.34, 1.4, 0.64, 1);
    --font: "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
    --font-num: "Helvetica Neue", "Arial Narrow", Arial, sans-serif;
    --header-h: 76px;
    --shadow-sm: 0 1px 2px rgba(14, 15, 19, 0.06);
    --shadow: 0 8px 30px rgba(14, 15, 19, 0.08);
    --shadow-lg: 0 30px 70px rgba(14, 15, 19, 0.14);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--header-h);
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font);
    color: var(--ink);
    background: var(--bg);
    line-height: 1.62;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
    overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; }
ul { list-style: none; }

.container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 var(--gutter);
}

/* ---------- Reveal ---------- */
html.js-ready .reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
    transition-delay: var(--delay, 0s);
    will-change: opacity, transform;
}
html.js-ready .reveal.in-view { opacity: 1; transform: none; }
html.js-ready .reveal-left { transform: translateX(-28px); }
html.js-ready .reveal-right { transform: translateX(28px); }
html.js-ready .reveal-left.in-view,
html.js-ready .reveal-right.in-view { transform: none; }

@media (prefers-reduced-motion: reduce) {
    html.js-ready .reveal { opacity: 1; transform: none; transition: none; }
    * { animation: none !important; }
}

@keyframes fadeUp { from { opacity: 0; transform: translateY(18px); } to { opacity: 1; transform: none; } }
@keyframes scrollDot { 0% { transform: translateY(0); opacity: 1; } 70% { transform: translateY(14px); opacity: 0; } 100% { opacity: 0; } }

/* ============================================================
   HEADER
   ============================================================ */
.site-header {
    position: fixed;
    inset: 0 0 auto 0;
    z-index: 100;
    height: var(--header-h);
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: saturate(160%) blur(12px);
    -webkit-backdrop-filter: saturate(160%) blur(12px);
    border-bottom: 1px solid transparent;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}
.site-header.scrolled {
    border-bottom-color: var(--line);
    box-shadow: 0 1px 16px rgba(14, 15, 19, 0.05);
}
.site-header .container {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.brand { display: flex; align-items: center; gap: 11px; }
.brand-logo { width: 36px; height: 36px; object-fit: contain; display: block; }
.brand-name { display: flex; flex-direction: column; line-height: 1.05; }
.brand-name .cn { font-size: 17px; font-weight: 700; letter-spacing: 0.5px; color: var(--ink); }
.brand-name .en { font-size: 9px; letter-spacing: 3.5px; color: var(--steel-2); font-weight: 600; }

.nav { display: flex; align-items: center; gap: 30px; }
.nav a {
    font-size: 14.5px;
    color: var(--steel);
    font-weight: 500;
    position: relative;
    padding: 4px 0;
    transition: color 0.2s;
    white-space: nowrap;
}
.nav a:hover, .nav a.active { color: var(--ink); }
.nav a::after {
    content: "";
    position: absolute;
    left: 0; right: 0; bottom: -2px;
    height: 2px;
    background: var(--blue);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.28s var(--ease);
}
.nav a:hover::after, .nav a.active::after { transform: scaleX(1); }
.nav:hover a.active::after { transform: scaleX(0); }
.nav:hover a.active:hover::after { transform: scaleX(1); }

/* ---- products dropdown ---- */
.nav-item { position: relative; display: flex; align-items: center; }
.nav-item > a { display: flex; align-items: center; gap: 4px; }
.nav-arrow { flex-shrink: 0; transition: transform 0.2s var(--ease); }
.nav-item:hover .nav-arrow { transform: rotate(180deg); }
.nav-item::after { content: ""; position: absolute; top: 100%; left: 0; right: 0; height: 20px; }
.nav-dropdown {
    position: absolute;
    top: calc(100% + 20px);
    left: 50%;
    transform: translateX(-50%) translateY(-6px);
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    box-shadow: 0 20px 60px rgba(14,15,19,.13);
    min-width: 160px;
    padding: 6px 0;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.18s, transform 0.18s var(--ease);
    z-index: 200;
}
.nav-item:hover .nav-dropdown { opacity: 1; pointer-events: auto; transform: translateX(-50%) translateY(0); }
.nd-item { display: block; padding: 10px 20px; font-size: 14px; font-weight: 500; color: var(--steel); text-align: center; transition: background 0.12s, color 0.12s; }
.nd-item:hover { background: var(--bg-alt); color: var(--ink); }
.nd-all { display: block; padding: 10px 20px; font-size: 13px; font-weight: 600; color: var(--blue); border-top: 1px solid var(--line); margin-top: 4px; transition: background 0.12s; text-align: center; }
.nd-all:hover { background: var(--blue-light); }
/* --- end dropdown --- */

.header-actions { display: flex; align-items: center; gap: 14px; }
.lang-toggle {
    display: inline-flex;
    align-items: center;
    gap: 3px;
    padding: 6px 12px;
    border: 1px solid var(--line-2);
    border-radius: 2px;
    font-size: 12.5px;
    font-weight: 600;
    color: var(--steel);
    transition: border-color 0.2s, color 0.2s;
}
.lang-toggle:hover { border-color: var(--blue); color: var(--blue); }
.lang-toggle .sep { color: var(--line-2); }
.lang-toggle [data-lang].active { color: var(--blue); }

/* Unified header language switcher (native CN/EN + 18 Google languages) */
.lang-menu { position: relative; }
.lang-menu-btn { display: inline-flex; align-items: center; gap: 7px; padding: 6px 10px; border: 1px solid var(--line-2); border-radius: 3px; font-size: 12.5px; font-weight: 600; color: var(--steel); background: transparent; cursor: pointer; transition: border-color .2s, color .2s; }
.lang-menu-btn:hover { border-color: var(--blue); color: var(--blue); }
.lang-cur-flag { width: 20px; height: 14px; object-fit: cover; border-radius: 2px; display: block; }
.lang-cur-name { white-space: nowrap; }
.lang-caret { flex: none; transition: transform .2s var(--ease); }
.lang-menu.open .lang-caret { transform: rotate(180deg); }
.lang-menu-list { position: absolute; top: calc(100% + 8px); right: 0; width: 196px; max-height: 344px; overflow-y: auto; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); box-shadow: 0 20px 60px rgba(14,15,19,.14); padding: 6px; z-index: 300; opacity: 0; pointer-events: none; transform: translateY(-6px); transition: opacity .18s, transform .18s var(--ease); }
.lang-menu.open .lang-menu-list { opacity: 1; pointer-events: auto; transform: none; }
.lang-item { display: flex; align-items: center; gap: 10px; width: 100%; padding: 8px 10px; border: none; background: transparent; border-radius: 4px; font-size: 13.5px; font-weight: 500; color: var(--steel); cursor: pointer; text-align: left; transition: background .12s, color .12s; }
.lang-item:hover { background: var(--bg-alt); color: var(--ink); }
.lang-item.active { color: var(--blue); font-weight: 600; }
.lang-item img { width: 22px; height: 15px; object-fit: cover; border-radius: 2px; display: block; flex: none; }
/* Hide GTranslate's own floating switcher — the header dropdown drives its engine via cookie */
.gtranslate_wrapper, .gt_float_switcher, .gt-float-switcher { position: fixed !important; left: -9999px !important; top: -9999px !important; width: 0 !important; height: 0 !important; opacity: 0 !important; pointer-events: none !important; overflow: hidden !important; }
@media (max-width: 560px) { .lang-cur-name { display: none; } .lang-menu-list { width: 184px; } }

.header-cta {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 9px 18px;
    background: var(--blue);
    color: #fff;
    font-size: 13.5px;
    font-weight: 600;
    border-radius: 2px;
    transition: background 0.2s, transform 0.2s;
}
.header-cta:hover { background: var(--blue-dark); transform: translateY(-1px); }

.menu-btn { display: none; width: 40px; height: 40px; align-items: center; justify-content: center; color: var(--ink); }

/* ============================================================
   HERO
   ============================================================ */
.hero {
    position: relative;
    min-height: 100vh;
    min-height: 100svh;
    display: flex;
    align-items: center;
    padding-top: var(--header-h);
    overflow: hidden;
    background: var(--ink);
}
.hero-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    opacity: 0.42;
    filter: grayscale(0.3) contrast(1.05);
}
.hero::after {
    content: "";
    position: absolute;
    inset: 0;
    background:
        linear-gradient(90deg, rgba(14, 15, 19, 0.86) 0%, rgba(14, 15, 19, 0.5) 42%, rgba(14, 15, 19, 0.12) 100%),
        linear-gradient(0deg, rgba(14, 15, 19, 0.7) 0%, transparent 45%);
}
.hero .container { position: relative; z-index: 2; width: 100%; }
.hero-content { max-width: 760px; }

.hero-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 12px;
    letter-spacing: 3px;
    text-transform: uppercase;
    font-weight: 600;
    color: var(--blue);
    margin-bottom: 26px;
    animation: fadeUp 0.7s var(--ease-out) both;
}
.hero-eyebrow::before { content: ""; width: 32px; height: 2px; background: var(--blue); }

.hero h1 {
    font-size: clamp(38px, 6.2vw, 78px);
    line-height: 1.04;
    font-weight: 800;
    letter-spacing: -1.5px;
    color: #fff;
    margin-bottom: 24px;
    animation: fadeUp 0.8s var(--ease-out) 0.1s both;
}
.hero h1 .accent { color: var(--blue); }

.hero-lead {
    font-size: clamp(16px, 1.7vw, 19px);
    color: rgba(255, 255, 255, 0.78);
    max-width: 580px;
    margin-bottom: 38px;
    animation: fadeUp 0.8s var(--ease-out) 0.2s both;
}

.hero-actions {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
    animation: fadeUp 0.8s var(--ease-out) 0.3s both;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    padding: 15px 30px;
    font-size: 15px;
    font-weight: 600;
    border-radius: 2px;
    transition: all 0.25s var(--ease);
}
.btn svg { transition: transform 0.25s var(--ease); }
.btn-primary { background: var(--blue); color: #fff; }
.btn-primary:hover { background: var(--blue-dark); transform: translateY(-2px); }
.btn-primary:hover svg { transform: translateX(4px); }
.btn-outline { background: transparent; color: #fff; border: 1px solid rgba(255, 255, 255, 0.35); }
.btn-outline:hover { border-color: #fff; background: rgba(255, 255, 255, 0.08); }
.btn-ghost { background: transparent; color: rgba(255,255,255,.75); border: 1px solid rgba(255,255,255,.18); gap: 7px; }
.btn-ghost:hover { background: rgba(255,255,255,.07); color: #fff; border-color: rgba(255,255,255,.35); }
.btn-dark { background: var(--ink); color: #fff; }
.btn-dark:hover { background: var(--ink-2); transform: translateY(-2px); }
.btn-dark:hover svg { transform: translateX(4px); }

.hero-stats {
    display: flex;
    gap: 0;
    margin-top: 64px;
    border-top: 1px solid rgba(255, 255, 255, 0.14);
    animation: fadeUp 0.8s var(--ease-out) 0.4s both;
}
.hero-stat {
    padding: 22px 36px 0 0;
    margin-right: 36px;
    border-right: 1px solid rgba(255, 255, 255, 0.14);
}
.hero-stat:last-child { border-right: none; }
.hero-stat .num {
    font-family: var(--font-num);
    font-size: 36px;
    font-weight: 700;
    color: #fff;
    line-height: 1;
    letter-spacing: -1px;
}
.hero-stat .num small { font-size: 0.5em; color: var(--blue); font-weight: 600; }
.hero-stat .label { font-size: 12.5px; color: rgba(255, 255, 255, 0.6); margin-top: 8px; }

.hero-scroll {
    position: absolute;
    left: 50%; bottom: 28px;
    transform: translateX(-50%);
    z-index: 3;
    width: 26px; height: 42px;
    border: 2px solid rgba(255, 255, 255, 0.35);
    border-radius: 14px;
    display: flex;
    justify-content: center;
    padding-top: 8px;
}
.hero-scroll span {
    width: 4px; height: 8px;
    border-radius: 2px;
    background: rgba(255, 255, 255, 0.8);
    animation: scrollDot 1.8s var(--ease) infinite;
}

/* ============================================================
   SECTION BASICS
   ============================================================ */
section { padding: 104px 0; position: relative; }
.section-alt { background: var(--bg-alt); }
.section-dark { background: var(--ink); color: #fff; }

.section-head { margin-bottom: 56px; max-width: 760px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 12px;
    letter-spacing: 3px;
    text-transform: uppercase;
    font-weight: 600;
    color: var(--blue);
    margin-bottom: 18px;
}
.section-eyebrow::before { content: ""; width: 28px; height: 2px; background: var(--blue); }
.section-head.center .section-eyebrow::after { content: ""; width: 28px; height: 2px; background: var(--blue); }
.section-head h2 {
    font-size: clamp(28px, 3.6vw, 44px);
    font-weight: 800;
    letter-spacing: -1px;
    line-height: 1.1;
    color: var(--ink);
}
.section-dark .section-head h2 { color: #fff; }
.section-head .lead {
    margin-top: 18px;
    font-size: 17px;
    color: var(--steel);
    line-height: 1.7;
}
.section-dark .section-head .lead { color: rgba(255, 255, 255, 0.7); }

/* ============================================================
   PRODUCT CENTER  (dry / wet)
   ============================================================ */
.product-groups {
    display: flex;
    gap: 8px;
    margin-bottom: 14px;
    flex-wrap: wrap;
}
.pgroup-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 1px;
    color: var(--steel-2);
    text-transform: uppercase;
    padding: 6px 0;
    margin-right: 8px;
}
.pgroup-label .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--blue); }
.pgroup-label.wet .dot { background: #16b3a6; }

.ptabs {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
    border-bottom: 1px solid var(--line);
    margin-bottom: 48px;
    padding-bottom: 2px;
}
.ptab {
    padding: 13px 22px;
    font-size: 14.5px;
    font-weight: 600;
    color: var(--steel);
    border-radius: 2px 2px 0 0;
    position: relative;
    transition: color 0.2s, background 0.2s;
    white-space: nowrap;
}
.ptab .sub { font-family: var(--font-num); font-size: 11px; opacity: 0.55; margin-left: 6px; letter-spacing: 0.5px; }
.ptab:hover { color: var(--ink); background: var(--bg-alt); }
.ptab::after {
    content: "";
    position: absolute;
    left: 0; right: 0; bottom: -3px;
    height: 3px;
    background: var(--blue);
    transform: scaleX(0);
    transition: transform 0.28s var(--ease);
}
.ptab.active { color: var(--blue); }
.ptab.active::after { transform: scaleX(1); }

.product-section { display: none; }
.product-section.active { display: block; animation: fadeUp 0.45s var(--ease-out); }

.product-header {
    display: grid;
    grid-template-columns: 1.05fr 1fr;
    gap: 56px;
    align-items: center;
    margin-bottom: 56px;
}
.product-photo {
    position: relative;
    aspect-ratio: 4 / 3;
    background: var(--bg-alt);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding: 40px;
}
.product-photo img { max-height: 100%; width: auto; object-fit: contain; transition: transform 0.6s var(--ease); }
.product-photo:hover img { transform: scale(1.04); }
.product-photo .corner {
    position: absolute;
    top: 16px; left: 16px;
    font-family: var(--font-num);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 1px;
    color: var(--steel-2);
    background: #fff;
    border: 1px solid var(--line);
    padding: 4px 10px;
    border-radius: 2px;
}

.product-info .tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-num);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 1.5px;
    color: var(--blue);
    background: var(--blue-light);
    padding: 6px 12px;
    border-radius: 2px;
    margin-bottom: 18px;
}
.product-info h3 {
    font-size: clamp(26px, 3.2vw, 36px);
    font-weight: 800;
    letter-spacing: -0.8px;
    line-height: 1.12;
    margin-bottom: 10px;
}
.product-info .en-name {
    font-size: 14px;
    color: var(--steel-2);
    font-weight: 500;
    letter-spacing: 0.5px;
    margin-bottom: 20px;
}
.product-info p { color: var(--steel); font-size: 15px; line-height: 1.75; margin-bottom: 22px; }
.product-feats { display: grid; gap: 11px; }
.product-feats li {
    display: flex;
    gap: 12px;
    font-size: 14px;
    color: var(--ink);
    align-items: flex-start;
}
.product-feats li svg { flex-shrink: 0; width: 18px; height: 18px; color: var(--blue); margin-top: 2px; }

.spec-table-wrap {
    overflow-x: auto;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    -webkit-overflow-scrolling: touch;
}
.spec-table { width: 100%; border-collapse: collapse; font-size: 13px; background: #fff; }
.spec-table th, .spec-table td {
    padding: 13px 16px;
    text-align: center;
    border-bottom: 1px solid var(--line);
    border-right: 1px solid var(--line);
    white-space: nowrap;
}
.spec-table th:last-child, .spec-table td:last-child { border-right: none; }
.spec-table tbody tr:last-child th, .spec-table tbody tr:last-child td { border-bottom: none; }
.spec-table thead th {
    background: var(--ink);
    color: #fff;
    font-weight: 600;
    font-family: var(--font-num);
    letter-spacing: 0.5px;
    position: sticky;
    top: 0;
}
.spec-table tbody th {
    background: var(--bg-alt);
    text-align: left;
    color: var(--ink);
    font-weight: 600;
    position: sticky;
    left: 0;
    z-index: 1;
}
.spec-table tbody tr:hover td { background: var(--blue-light); }
.spec-table td.merged { text-align: left; padding-left: 18px; color: var(--steel); font-style: italic; }

.product-note {
    margin-top: 20px;
    font-size: 13px;
    color: var(--steel-2);
    display: flex;
    align-items: center;
    gap: 8px;
}
.product-note svg { width: 16px; height: 16px; color: var(--blue); flex-shrink: 0; }

/* ============================================================
   SOLUTIONS (industries)
   ============================================================ */
.solutions-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1px;
    background: var(--line);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    overflow: hidden;
}
.solution-card {
    position: relative;
    background: #fff;
    aspect-ratio: 3 / 4;
    overflow: hidden;
    cursor: default;
}
.solution-card .photo {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    filter: grayscale(0.4) brightness(0.92);
    transition: transform 0.7s var(--ease), filter 0.5s var(--ease);
}
.solution-card::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 35%, rgba(14, 15, 19, 0.9));
    transition: background 0.4s;
}
.solution-card:hover .photo { transform: scale(1.07); filter: grayscale(0) brightness(1); }
.solution-card .body { position: absolute; left: 0; bottom: 0; right: 0; padding: 26px; z-index: 2; color: #fff; }
.solution-card .en {
    font-size: 19px;
    font-weight: 800;
    letter-spacing: -0.3px;
    line-height: 1.15;
    margin-bottom: 4px;
}
.solution-card .cn-sub { font-size: 13px; color: rgba(255, 255, 255, 0.72); }
.solution-card .arrow {
    position: absolute;
    top: 22px; right: 22px;
    width: 34px; height: 34px;
    border: 1px solid rgba(255, 255, 255, 0.4);
    border-radius: 2px;
    display: flex; align-items: center; justify-content: center;
    color: #fff;
    opacity: 0;
    transform: translateY(-6px);
    transition: all 0.35s var(--ease);
    z-index: 2;
}
.solution-card:hover .arrow { opacity: 1; transform: none; }

/* ---- Carousel (reusable horizontal slider) ---- */
.carousel { position: relative; }
.carousel-viewport { overflow: hidden; }
.carousel-track { display: flex; gap: 20px; transition: transform .55s cubic-bezier(.22,.61,.36,1); will-change: transform; }
.carousel-track > * { flex: 0 0 auto; border-radius: var(--radius); }
.carousel-btn {
    position: absolute; top: 50%; transform: translateY(-50%);
    width: 46px; height: 46px; border-radius: 50%;
    background: #fff; border: 1px solid var(--line);
    box-shadow: 0 8px 26px rgba(14,15,19,.14);
    display: flex; align-items: center; justify-content: center;
    color: var(--ink); cursor: pointer; z-index: 5;
    transition: background .2s, color .2s, border-color .2s;
}
.carousel-btn:hover { background: var(--blue); color: #fff; border-color: var(--blue); }
.carousel-btn.prev { left: -20px; }
.carousel-btn.next { right: -20px; }
.carousel-dots { display: flex; justify-content: center; gap: 8px; margin-top: 26px; }
.carousel-dot { width: 8px; height: 8px; padding: 0; border: none; border-radius: 50%; background: var(--line-2); cursor: pointer; transition: background .25s, width .25s; }
.carousel-dot.active { background: var(--blue); width: 22px; border-radius: 4px; }
.carousel.no-nav .carousel-btn, .carousel.no-nav .carousel-dots { display: none; }
@media (max-width: 620px) { .carousel-btn { display: none; } .carousel-track { gap: 14px; } }

/* ============================================================
   ADVANTAGES (numbered, industrial)
   ============================================================ */
.adv-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.adv-card {
    background: #fff;
    padding: 38px 32px;
    transition: background 0.3s;
    position: relative;
}
.adv-card:hover { background: var(--bg-alt); }
.adv-card .num {
    font-family: var(--font-num);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 1px;
    color: var(--blue);
    margin-bottom: 22px;
    display: flex;
    align-items: center;
    gap: 10px;
}
.adv-card .num::after { content: ""; flex: 1; height: 1px; background: var(--line); }
.adv-card .icon { width: 40px; height: 40px; color: var(--ink); margin-bottom: 18px; }
.adv-card:hover .icon { color: var(--blue); }
.adv-card h3 { font-size: 19px; font-weight: 700; margin-bottom: 11px; letter-spacing: -0.3px; }
.adv-card p { color: var(--steel); font-size: 14px; line-height: 1.7; }

/* ============================================================
   DETAILS (real photos)
   ============================================================ */
.details-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.detail-card {
    border: 1px solid var(--line);
    border-radius: var(--radius);
    overflow: hidden;
    background: #fff;
    transition: border-color 0.3s, transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}
.detail-card:hover { border-color: var(--line-2); transform: translateY(-4px); box-shadow: var(--shadow); }
.detail-card .photo { aspect-ratio: 4 / 3; overflow: hidden; background: var(--bg-alt); position: relative; }
.detail-card .photo img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s var(--ease); }
.detail-card:hover .photo img { transform: scale(1.06); }
.detail-card .photo .idx {
    position: absolute;
    top: 12px; left: 12px;
    font-family: var(--font-num);
    font-size: 11px;
    font-weight: 700;
    color: #fff;
    background: rgba(14, 15, 19, 0.6);
    backdrop-filter: blur(4px);
    padding: 3px 8px;
    border-radius: 2px;
    letter-spacing: 1px;
}
.detail-card .body { padding: 20px; }
.detail-card h4 { font-size: 16px; font-weight: 700; margin-bottom: 7px; }
.detail-card p { font-size: 13px; color: var(--steel); line-height: 1.6; }

/* ============================================================
   CASES
   ============================================================ */
.cases-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.case-card {
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--radius);
    padding: 34px 30px;
    background: var(--ink-2);
    transition: border-color 0.3s, transform 0.3s var(--ease);
}
.case-card:hover { border-color: rgba(10, 92, 255, 0.5); transform: translateY(-4px); }
.case-card .flag { font-size: 30px; line-height: 0; margin-bottom: 18px; }
.case-card .flag img { display: block; width: 46px; height: auto; border-radius: 3px; box-shadow: 0 2px 10px rgba(0, 0, 0, 0.4); }
.case-card .quote { font-size: 15px; color: rgba(255, 255, 255, 0.88); line-height: 1.7; margin-bottom: 22px; }
.case-card .who { display: flex; align-items: center; gap: 12px; }
.case-card .who .avatar {
    width: 40px; height: 40px;
    border-radius: 50%;
    background: var(--blue);
    color: #fff;
    display: flex; align-items: center; justify-content: center;
    font-weight: 700;
    font-size: 15px;
}
.case-card .who .meta strong { display: block; font-size: 14px; color: #fff; }
.case-card .who .meta span { font-size: 12.5px; color: rgba(255, 255, 255, 0.55); }

.cases-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.1);
    margin-top: 28px;
}
.cases-stats .item { background: var(--ink); padding: 30px; text-align: center; }
.cases-stats .item .big {
    font-family: var(--font-num);
    font-size: clamp(34px, 4vw, 50px);
    font-weight: 700;
    color: #fff;
    line-height: 1;
    letter-spacing: -1px;
}
.cases-stats .item .big small { color: var(--blue); font-size: 0.5em; }
.cases-stats .item .lbl { font-size: 13px; color: rgba(255, 255, 255, 0.6); margin-top: 10px; }

/* ============================================================
   ABOUT
   ============================================================ */
.about-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: 64px; align-items: center; }
.about-visual {
    position: relative;
    aspect-ratio: 4 / 5;
    border-radius: var(--radius);
    overflow: hidden;
    background: var(--ink);
}
.about-visual img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: 0.85; }
.about-visual .tagline {
    position: absolute;
    left: 30px; bottom: 30px; right: 30px;
    z-index: 2; color: #fff;
}
.about-visual .tagline .big { font-size: 26px; font-weight: 800; letter-spacing: -0.5px; line-height: 1.2; }
.about-visual .tagline .small { font-size: 12px; letter-spacing: 2px; text-transform: uppercase; color: var(--blue); margin-top: 8px; }
.about-text h2 { font-size: clamp(26px, 3.4vw, 40px); font-weight: 800; letter-spacing: -0.8px; line-height: 1.15; margin-bottom: 22px; }
.about-text p { color: var(--steel); font-size: 15.5px; line-height: 1.78; margin-bottom: 18px; }
.about-values { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; margin-top: 34px; }
.about-value .v-num { font-family: var(--font-num); font-size: 30px; font-weight: 700; color: var(--blue); letter-spacing: -1px; }
.about-value h4 { font-size: 15px; font-weight: 700; margin: 8px 0 4px; }
.about-value p { font-size: 13px; color: var(--steel-2); line-height: 1.6; margin: 0; }

/* ============================================================
   CONTACT
   ============================================================ */
.contact { background: var(--bg-alt); }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; }
.contact-channels { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.channel {
    border: 1px solid var(--line);
    background: #fff;
    border-radius: var(--radius);
    padding: 24px;
    transition: border-color 0.3s, transform 0.3s var(--ease);
    display: block;
}
.channel:hover { border-color: var(--blue); transform: translateY(-3px); }
.channel .icon {
    width: 44px; height: 44px;
    border-radius: 2px;
    background: var(--bg-alt);
    color: var(--ink);
    display: flex; align-items: center; justify-content: center;
    margin-bottom: 16px;
    transition: background 0.3s, color 0.3s;
}
.channel:hover .icon { background: var(--blue); color: #fff; }
.channel h4 { font-size: 12px; letter-spacing: 1.5px; text-transform: uppercase; color: var(--steel-2); margin-bottom: 8px; font-weight: 700; }
.channel .val { font-size: 15px; font-weight: 600; color: var(--ink); word-break: break-word; }
.channel .val small { display: block; font-weight: 400; font-size: 13px; color: var(--steel); margin-top: 3px; }

.contact-form {
    border: 1px solid var(--line);
    background: #fff;
    border-radius: var(--radius);
    padding: 36px;
}
.contact-form h3 { font-size: 22px; font-weight: 800; letter-spacing: -0.5px; margin-bottom: 6px; }
.contact-form .sub { font-size: 14px; color: var(--steel); margin-bottom: 24px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.field { margin-bottom: 16px; }
.field label { display: block; font-size: 13px; font-weight: 600; color: var(--ink); margin-bottom: 7px; }
.field input, .field textarea, .field select {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid var(--line-2);
    border-radius: 2px;
    font-size: 14px;
    font-family: inherit;
    color: var(--ink);
    background: #fff;
    transition: border-color 0.2s;
}
.field input:focus, .field textarea:focus, .field select:focus { outline: none; border-color: var(--blue); }
.field textarea { resize: vertical; min-height: 96px; }
.contact-form .btn { width: 100%; justify-content: center; }

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer { background: var(--ink); color: rgba(255, 255, 255, 0.6); padding: 64px 0 28px; }
.footer-top { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 40px; padding-bottom: 44px; border-bottom: 1px solid rgba(255, 255, 255, 0.1); }
.footer-brand .brand-name .cn { color: #fff; }
.footer-brand .brand-name .en { color: rgba(255, 255, 255, 0.5); }
.footer-brand p { font-size: 14px; line-height: 1.7; margin-top: 18px; max-width: 320px; }
.footer-col h5 { font-size: 12px; letter-spacing: 1.5px; text-transform: uppercase; color: rgba(255, 255, 255, 0.45); margin-bottom: 18px; font-weight: 700; }
.footer-col a { display: block; font-size: 14px; color: rgba(255, 255, 255, 0.7); padding: 5px 0; transition: color 0.2s; }
.footer-col a:hover { color: #fff; }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 14px; padding-top: 26px; font-size: 13px; }
.footer-bottom .links { display: flex; gap: 22px; }

/* Footer social icons */
.footer-social { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }
.footer-social .soc { width: 38px; height: 38px; border-radius: 50%; display: flex; align-items: center; justify-content: center; border: 1px solid rgba(255, 255, 255, 0.18); color: rgba(255, 255, 255, 0.72); transition: transform 0.2s var(--ease), background 0.2s, color 0.2s, border-color 0.2s; }
.footer-social .soc svg { width: 18px; height: 18px; display: block; }
.footer-social .soc:hover { transform: translateY(-2px); color: #fff; }
.footer-social .soc[data-net="linkedin"]:hover { background: #0a66c2; border-color: #0a66c2; }
.footer-social .soc[data-net="facebook"]:hover { background: #1877f2; border-color: #1877f2; }
.footer-social .soc[data-net="instagram"]:hover { background: linear-gradient(45deg, #f09433, #e6683c, #dc2743, #cc2366, #bc1888); border-color: transparent; }
.footer-social .soc[data-net="youtube"]:hover { background: #ff0000; border-color: #ff0000; }
.footer-social .soc[data-net="tiktok"]:hover { background: #000; border-color: rgba(255, 255, 255, 0.5); }
.footer-social .soc[data-net="x"]:hover { background: #000; border-color: rgba(255, 255, 255, 0.5); }

/* Contact-page social row (light background) */
.contact-social { grid-column: 1 / -1; margin-top: 8px; padding-top: 24px; border-top: 1px solid var(--line); }
.contact-social .lbl { font-size: 12px; letter-spacing: 1.5px; text-transform: uppercase; color: var(--steel-2); font-weight: 700; margin-bottom: 14px; }
.contact-social .row { display: flex; flex-wrap: wrap; gap: 10px; }
.contact-social .soc { width: 42px; height: 42px; border-radius: 50%; display: flex; align-items: center; justify-content: center; border: 1px solid var(--line-2); color: var(--steel); transition: transform 0.2s var(--ease), background 0.2s, color 0.2s, border-color 0.2s; }
.contact-social .soc svg { width: 19px; height: 19px; display: block; }
.contact-social .soc:hover { transform: translateY(-2px); color: #fff; }
.contact-social .soc[data-net="linkedin"]:hover { background: #0a66c2; border-color: #0a66c2; }
.contact-social .soc[data-net="facebook"]:hover { background: #1877f2; border-color: #1877f2; }
.contact-social .soc[data-net="instagram"]:hover { background: linear-gradient(45deg, #f09433, #e6683c, #dc2743, #cc2366, #bc1888); border-color: transparent; }
.contact-social .soc[data-net="youtube"]:hover { background: #ff0000; border-color: #ff0000; }
.contact-social .soc[data-net="tiktok"]:hover { background: #111; border-color: #111; }
.contact-social .soc[data-net="x"]:hover { background: #111; border-color: #111; }

/* ============================================================
   BILINGUAL
   ============================================================ */
[data-i18n-cn], [data-i18n-en] { display: inline; }
/* Language visibility is driven by the .lang-zh / .lang-en class on <html> (set by site.js),
   NOT the [lang] attribute — third-party translators (GTranslate/Google) rewrite [lang] to the
   target language, which would otherwise unhide BOTH languages and produce mixed garbage.
   The [lang] selectors are kept only as a no-JS fallback for the default English page. */
html.lang-zh [data-i18n-en], html.lang-en [data-i18n-cn],
html:not(.lang-zh):not(.lang-en)[lang="en"] [data-i18n-cn] { display: none; }
html.lang-zh [data-i18n-block-en], html.lang-en [data-i18n-block-cn],
html:not(.lang-zh):not(.lang-en)[lang="en"] [data-i18n-block-cn] { display: none !important; }

/* ============================================================
   INNER PAGES — page hero + breadcrumb
   ============================================================ */
.page-hero {
    position: relative;
    padding: calc(var(--header-h) + 64px) 0 60px;
    background: var(--ink);
    color: #fff;
    overflow: hidden;
}
.page-hero.light { background: var(--bg-alt); color: var(--ink); }
.page-hero .bg {
    position: absolute; inset: 0;
    background-size: cover; background-position: center;
    opacity: 0.28; filter: grayscale(0.3);
}
.page-hero::after {
    content: ""; position: absolute; inset: 0;
    background: linear-gradient(90deg, rgba(14,15,19,0.92), rgba(14,15,19,0.55));
}
.page-hero.light::after { display: none; }
.page-hero .container { position: relative; z-index: 2; }
.breadcrumb { display: flex; align-items: center; gap: 8px; font-size: 13px; color: rgba(255,255,255,0.6); margin-bottom: 20px; }
.page-hero.light .breadcrumb { color: var(--steel-2); }
.breadcrumb a { transition: color 0.2s; }
.breadcrumb a:hover { color: #fff; }
.page-hero.light .breadcrumb a:hover { color: var(--blue); }
.breadcrumb .sep { opacity: 0.5; }
.page-hero h1 { font-size: clamp(30px, 4.4vw, 52px); font-weight: 800; letter-spacing: -1px; line-height: 1.08; margin-bottom: 16px; }
.page-hero .sub { font-size: clamp(15px, 1.7vw, 18px); color: rgba(255,255,255,0.72); max-width: 640px; line-height: 1.7; }
.page-hero.light .sub { color: var(--steel); }
.page-hero .eyebrow { display: inline-flex; align-items: center; gap: 10px; font-size: 12px; letter-spacing: 3px; text-transform: uppercase; font-weight: 600; color: var(--blue); margin-bottom: 18px; }
.page-hero .eyebrow::before { content: ""; width: 28px; height: 2px; background: var(--blue); }

/* ============================================================
   PRODUCT CATALOG (products.html)
   ============================================================ */
.catalog-group { margin-bottom: 56px; }
.catalog-group-head { display: flex; align-items: baseline; gap: 14px; padding-bottom: 16px; margin-bottom: 28px; border-bottom: 2px solid var(--ink); }
.catalog-group-head .dot { width: 12px; height: 12px; border-radius: 50%; background: var(--blue); }
.catalog-group-head.wet .dot { background: #16b3a6; }
.catalog-group-head h2 { font-size: 24px; font-weight: 800; letter-spacing: -0.5px; }
.catalog-group-head .en { font-size: 13px; color: var(--steel-2); font-weight: 500; letter-spacing: 1px; }
.catalog-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.catalog-card { display: grid; grid-template-columns: 260px 1fr; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: #fff; transition: border-color 0.3s, box-shadow 0.3s var(--ease), transform 0.3s var(--ease); }
.catalog-card:hover { border-color: var(--line-2); box-shadow: var(--shadow); transform: translateY(-3px); }
.catalog-card .pic { background: transparent; display: flex; align-items: center; justify-content: center; padding: 18px; border-right: none; overflow: hidden; }
.catalog-card .pic img { max-height: 210px; width: auto; object-fit: contain; mix-blend-mode: multiply; transition: transform 0.5s var(--ease); }
.catalog-card:hover .pic img { transform: scale(1.05); }
.catalog-card .meta { padding: 24px; display: flex; flex-direction: column; }
.catalog-card .meta .code { font-family: var(--font-num); font-size: 11px; font-weight: 700; letter-spacing: 1.5px; color: var(--blue); margin-bottom: 8px; }
.catalog-card .meta h3 { font-size: 19px; font-weight: 700; letter-spacing: -0.3px; margin-bottom: 6px; }
.catalog-card .meta p { font-size: 13px; color: var(--steel); line-height: 1.6; margin-bottom: 14px; flex: 1; }
.catalog-card .meta .models { font-size: 12px; color: var(--steel-2); margin-bottom: 14px; }
.catalog-card .meta .go { display: inline-flex; align-items: center; gap: 7px; font-size: 13px; font-weight: 600; color: var(--blue); transition: gap 0.25s var(--ease); }
.catalog-card:hover .meta .go { gap: 12px; }

/* ============================================================
   PRODUCT DETAIL PAGE
   ============================================================ */
.pd-block { padding: 80px 0; border-top: 1px solid var(--line); }
.pd-block:first-of-type { border-top: none; }
.pd-head { margin-bottom: 40px; }
.pd-head .step { font-family: var(--font-num); font-size: 12px; font-weight: 700; letter-spacing: 2px; color: var(--blue); margin-bottom: 10px; }
.pd-head h2 { font-size: clamp(24px, 3.2vw, 34px); font-weight: 800; letter-spacing: -0.6px; }

/* gallery */
.pd-top { display: grid; grid-template-columns: 1.05fr 1fr; gap: 56px; align-items: start; }
.gallery .gallery-main { aspect-ratio: 4/3; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; display: flex; align-items: center; justify-content: center; padding: 24px; overflow: hidden; }
.gallery .gallery-main img { max-height: 100%; width: auto; object-fit: contain; mix-blend-mode: multiply; }
.gallery .gallery-thumbs { display: flex; gap: 12px; margin-top: 14px; }
.gallery .gallery-thumbs button { width: 84px; height: 70px; border: 1px solid var(--line); border-radius: 3px; background: #fff; padding: 8px; cursor: pointer; transition: border-color 0.2s; overflow: hidden; }
.gallery .gallery-thumbs button.active { border-color: var(--blue); }
.gallery .gallery-thumbs button img { width: 100%; height: 100%; object-fit: contain; mix-blend-mode: multiply; }
.pd-intro .tag { display: inline-flex; align-items: center; gap: 8px; font-family: var(--font-num); font-size: 12px; font-weight: 700; letter-spacing: 1.5px; color: var(--blue); background: var(--blue-light); padding: 6px 12px; border-radius: 2px; margin-bottom: 18px; }
.pd-intro h1 { font-size: clamp(26px, 3.4vw, 38px); font-weight: 800; letter-spacing: -0.8px; line-height: 1.12; margin-bottom: 10px; }
.pd-intro .en-name { font-size: 14px; color: var(--steel-2); letter-spacing: 0.5px; margin-bottom: 20px; }
.pd-intro p { color: var(--steel); font-size: 15px; line-height: 1.78; margin-bottom: 24px; }
.pd-intro .quick { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; margin-bottom: 26px; }
.pd-intro .quick .q { background: #fff; padding: 16px 18px; }
.pd-intro .quick .q .k { font-size: 12px; color: var(--steel-2); margin-bottom: 4px; }
.pd-intro .quick .q .v { font-family: var(--font-num); font-size: 18px; font-weight: 700; color: var(--ink); }
.pd-intro .quick .q .v small { font-size: 0.6em; color: var(--blue); }
.pd-cta { display: flex; gap: 12px; flex-wrap: wrap; }

/* video */
.video-ph { position: relative; aspect-ratio: 16/9; border-radius: var(--radius); overflow: hidden; cursor: pointer; background: var(--ink-2); }
.video-ph .vbg { position: absolute; inset: 0; background-size: cover; background-position: center; opacity: 0.4; filter: grayscale(0.3); transition: opacity 0.3s; }
.video-ph:hover .vbg { opacity: 0.5; }
.video-ph::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(14,15,19,0.3), rgba(14,15,19,0.7)); }
.video-ph .play { position: absolute; top: 50%; left: 50%; transform: translate(-50%,-50%); z-index: 2; display: flex; flex-direction: column; align-items: center; gap: 16px; color: #fff; }
.video-ph .play .circle { width: 76px; height: 76px; border-radius: 50%; background: var(--blue); display: flex; align-items: center; justify-content: center; box-shadow: 0 12px 40px rgba(10,92,255,0.5); transition: transform 0.3s var(--ease-spring); }
.video-ph:hover .play .circle { transform: scale(1.08); }
.video-ph .play .label { font-size: 14px; font-weight: 600; letter-spacing: 0.5px; }
.video-ph .play .note { font-size: 12px; color: rgba(255,255,255,0.6); }
.video-ph.playing .play, .video-ph.playing .vbg, .video-ph.playing::after { display: none; }
.video-row { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.video-row.three { grid-template-columns: repeat(3, 1fr); }
.video-row .vlabel { margin-top: 12px; font-size: 14px; font-weight: 600; }
.video-row .vlabel small { display: block; font-weight: 400; font-size: 12.5px; color: var(--steel-2); margin-top: 2px; }
@media (max-width: 900px) { .video-row.three { grid-template-columns: 1fr; } }

/* feature icons */
.feat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.feat-cell { background: #fff; padding: 32px 28px; transition: background 0.3s; }
.feat-cell:hover { background: var(--bg-alt); }
.feat-cell .ic { width: 42px; height: 42px; color: var(--blue); margin-bottom: 16px; }
.feat-cell h4 { font-size: 17px; font-weight: 700; margin-bottom: 8px; }
.feat-cell p { font-size: 13.5px; color: var(--steel); line-height: 1.65; }

/* application industries (SEO) */
.appind-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.appind { border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: #fff; transition: border-color 0.3s, transform 0.3s var(--ease); }
.appind:hover { border-color: var(--blue); transform: translateY(-3px); }
.appind .pic { aspect-ratio: 16/10; background-size: cover; background-position: center; filter: grayscale(0.35); transition: filter 0.4s; }
.appind:hover .pic { filter: grayscale(0); }
.appind .b { padding: 18px 20px; }
.appind .b .en { font-size: 16px; font-weight: 800; letter-spacing: -0.2px; }
.appind .b .cn { font-size: 13px; color: var(--steel-2); margin-top: 3px; }

/* sticky inquiry bar inside detail */
.cta-band { background: var(--ink); color: #fff; border-radius: var(--radius); padding: 44px 48px; display: flex; align-items: center; justify-content: space-between; gap: 28px; flex-wrap: wrap; }
.cta-band h3 { font-size: clamp(22px, 2.6vw, 30px); font-weight: 800; letter-spacing: -0.5px; }
.cta-band p { color: rgba(255,255,255,0.65); font-size: 15px; margin-top: 8px; }
.cta-band .acts { display: flex; gap: 12px; flex-wrap: wrap; }

/* ============================================================
   SUPPORT PAGE
   ============================================================ */
.support-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-bottom: 64px; }
.support-card { border: 1px solid var(--line); border-radius: var(--radius); padding: 30px; background: #fff; transition: border-color 0.3s, transform 0.3s var(--ease); }
.support-card:hover { border-color: var(--line-2); transform: translateY(-3px); box-shadow: var(--shadow); }
.support-card .ic { width: 46px; height: 46px; border-radius: 3px; background: var(--bg-alt); color: var(--blue); display: flex; align-items: center; justify-content: center; margin-bottom: 18px; }
.support-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
.support-card p { font-size: 13.5px; color: var(--steel); line-height: 1.65; margin-bottom: 16px; }
.support-card .dl { display: inline-flex; align-items: center; gap: 7px; font-size: 13px; font-weight: 600; color: var(--blue); }
.support-card .dl.disabled { color: var(--steel-3); pointer-events: none; }

.faq-list { max-width: 100%; }
.faq-item { border: 1px solid var(--line); border-radius: var(--radius); margin-bottom: 12px; overflow: hidden; background: #fff; }
.faq-item .faq-q { width: 100%; text-align: left; padding: 20px 24px; font-size: 16px; font-weight: 600; display: flex; align-items: center; justify-content: space-between; gap: 16px; cursor: pointer; }
.faq-item .faq-q .ico { flex-shrink: 0; width: 22px; height: 22px; color: var(--blue); transition: transform 0.3s var(--ease); }
.faq-item.open .faq-q .ico { transform: rotate(45deg); }
.faq-item .faq-a { max-height: 0; overflow: hidden; transition: max-height 0.35s var(--ease); }
.faq-item.open .faq-a { max-height: 360px; }
.faq-item .faq-a p { padding: 0 24px 22px; font-size: 14.5px; color: var(--steel); line-height: 1.75; }

.tutorials-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.tutorial { border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: #fff; }
.tutorial .video-ph { aspect-ratio: 16/9; border-radius: 0; }
.tutorial .tb { padding: 16px 18px; }
.tutorial .tb h4 { font-size: 15px; font-weight: 700; }
.tutorial .tb p { font-size: 12.5px; color: var(--steel-2); margin-top: 3px; }

/* ============================================================
   CASES PAGE extra
   ============================================================ */
.logos-strip { display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; margin-top: 40px; }
.logos-strip .lg { border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 28px; font-weight: 700; color: var(--steel-2); background: #fff; font-size: 15px; letter-spacing: 0.5px; }

/* generic section intro for inner pages */
.intro-narrow { max-width: 720px; margin: 0 auto 56px; text-align: center; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1080px) {
    .solutions-grid { grid-template-columns: repeat(2, 1fr); }
    .details-grid { grid-template-columns: repeat(2, 1fr); }
    .adv-grid { grid-template-columns: repeat(2, 1fr); }
    .cases-grid { grid-template-columns: 1fr; }
    .footer-top { grid-template-columns: 1fr 1fr; gap: 32px; }
    .catalog-grid { grid-template-columns: 1fr; }
    .feat-grid { grid-template-columns: repeat(2, 1fr); }
    .appind-grid { grid-template-columns: repeat(2, 1fr); }
    .support-cards, .tutorials-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 920px) {
    .nav {
        position: fixed;
        inset: var(--header-h) 0 auto 0;
        flex-direction: column;
        align-items: flex-start;
        background: #fff;
        padding: 22px var(--gutter);
        gap: 4px;
        border-bottom: 1px solid var(--line);
        transform: translateY(-110%);
        opacity: 0;
        transition: transform 0.3s var(--ease), opacity 0.3s var(--ease);
    }
    .nav a { padding: 12px 0; width: 100%; font-size: 16px; }
    .nav.open { transform: none; opacity: 1; }
    .menu-btn { display: inline-flex; }
    .header-cta { display: none; }
    .nav-item { flex-direction: column; align-items: flex-start; width: 100%; }
    .nav-item::after { display: none; }
    .nav-arrow { display: none; }
    .nav-dropdown { position: static; transform: none; opacity: 1; pointer-events: auto; box-shadow: none; border: none; border-left: 2px solid var(--line); border-radius: 0; padding: 2px 0 6px 12px; background: transparent; min-width: 0; width: 100%; }
    .nd-item { padding: 7px 6px; font-size: 14px; }
    .nd-all { border-top: none; margin-top: 0; padding: 7px 6px; }
    .product-header { grid-template-columns: 1fr; gap: 36px; }
    .about-grid { grid-template-columns: 1fr; gap: 44px; }
    .about-visual { aspect-ratio: 16 / 10; max-height: 420px; }
    .contact-grid { grid-template-columns: 1fr; gap: 40px; }
    section { padding: 76px 0; }
    .hero-stat { padding-right: 22px; margin-right: 22px; }
    .hero-stat .num { font-size: 28px; }
    .pd-top { grid-template-columns: 1fr; gap: 36px; }
    .video-row { grid-template-columns: 1fr; }
    .cta-band { padding: 32px; }
}
/* Map embed */
.map-wrap { margin-top: 8px; }
.map-cta { margin-top: 18px; display: flex; justify-content: flex-start; }

/* WhatsApp floating button */
.wa-float {
    position: fixed;
    bottom: 28px;
    right: 28px;
    z-index: 999;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: #25d366;
    color: #fff;
    box-shadow: 0 4px 18px rgba(37,211,102,.45);
    transition: transform .2s, box-shadow .2s;
    text-decoration: none;
}
.wa-float:hover { transform: scale(1.08); box-shadow: 0 6px 24px rgba(37,211,102,.55); }

@media (max-width: 600px) {
    :root { --gutter: 20px; }
    .hero { min-height: auto; padding: calc(var(--header-h) + 60px) 0 70px; }
    .hero-stats { flex-wrap: wrap; gap: 0; }
    .hero-stat { width: 50%; padding: 18px 18px 0 0; margin: 0; border-bottom: 1px solid rgba(255,255,255,0.14); }
    .hero-stat:nth-child(2) { border-right: none; }
    .solutions-grid, .details-grid, .adv-grid, .cases-stats, .about-values, .contact-channels, .form-row { grid-template-columns: 1fr; }
    .about-values { grid-template-columns: repeat(3, 1fr); gap: 12px; }
    .footer-top { grid-template-columns: 1fr; }
    .cases-stats { grid-template-columns: 1fr 1fr; }
    .hero-scroll { display: none; }
    .section-head { margin-bottom: 40px; }
    .catalog-card { grid-template-columns: 1fr; }
    .catalog-card .pic { border-right: none; border-bottom: 1px solid var(--line); aspect-ratio: 16/10; }
    .feat-grid, .appind-grid, .support-cards, .tutorials-grid, .pd-intro .quick { grid-template-columns: 1fr; }
    .appind-grid { grid-template-columns: 1fr 1fr; }
    .pd-block { padding: 56px 0; }
    .cta-band { flex-direction: column; align-items: flex-start; }
}

/* ============================================================
   Hero background video (real-factory loop)
   ============================================================ */
.hero-video {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.72;
    filter: contrast(1.03) brightness(1.06);
    z-index: 0;
    pointer-events: none;
}

/* ============================================================
   Why Choose Azure Era
   ============================================================ */
.why-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 18px;
}
.why-item {
    display: flex;
    flex-direction: column;
    gap: 14px;
    padding: 28px 24px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: #fff;
    transition: border-color 0.3s, box-shadow 0.3s var(--ease), transform 0.3s var(--ease);
}
.why-item:hover { border-color: var(--line-2); box-shadow: var(--shadow); transform: translateY(-3px); }
.why-item .why-check {
    width: 40px; height: 40px;
    flex: none;
    display: flex; align-items: center; justify-content: center;
    border-radius: 50%;
    background: rgba(10, 92, 255, 0.1);
    color: var(--blue);
}
.why-item .why-num {
    font-family: var(--font-num);
    font-size: 30px;
    font-weight: 700;
    line-height: 1;
    letter-spacing: -1px;
    color: var(--ink);
}
.why-item .why-num small { font-size: 0.5em; color: var(--blue); font-weight: 600; }
.why-item h4 { font-size: 15px; font-weight: 700; letter-spacing: -0.2px; }
.why-item p { font-size: 12.5px; color: var(--steel); line-height: 1.55; }

/* ============================================================
   Modal (About — News / Certificates / Exhibitions / Delivery)
   ============================================================ */
.module-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 18px;
}
.module-card {
    text-align: left;
    padding: 30px 26px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: #fff;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    gap: 14px;
    transition: border-color 0.3s, box-shadow 0.3s var(--ease), transform 0.3s var(--ease);
}
.module-card:hover { border-color: var(--blue); box-shadow: var(--shadow); transform: translateY(-3px); }
.module-card .ic {
    width: 28px; height: 28px;
    color: var(--blue);
}
.module-card h4 { font-size: 17px; font-weight: 700; letter-spacing: -0.2px; }
.module-card p { font-size: 13px; color: var(--steel); line-height: 1.6; flex: 1; }
.module-card .more { font-size: 13px; font-weight: 600; color: var(--blue); display: inline-flex; align-items: center; gap: 7px; transition: gap 0.25s var(--ease); }
.module-card:hover .more { gap: 12px; }

.modal-overlay {
    position: fixed;
    inset: 0;
    z-index: 200;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 24px;
    background: rgba(8, 12, 22, 0.62);
    -webkit-backdrop-filter: blur(4px);
    backdrop-filter: blur(4px);
    opacity: 0;
    transition: opacity 0.25s var(--ease);
}
.modal-overlay.open { display: flex; opacity: 1; }
.modal {
    position: relative;
    width: 100%;
    max-width: 640px;
    max-height: 86vh;
    overflow: auto;
    background: #fff;
    border-radius: var(--radius);
    padding: 44px 44px 40px;
    transform: translateY(14px) scale(0.99);
    transition: transform 0.28s var(--ease-out);
}
.modal-overlay.open .modal { transform: none; }
.modal .modal-eyebrow { font-size: 12px; letter-spacing: 2px; text-transform: uppercase; font-weight: 600; color: var(--blue); margin-bottom: 12px; }
.modal h3 { font-size: 26px; font-weight: 800; letter-spacing: -0.5px; margin-bottom: 18px; }
.modal p { font-size: 15px; color: var(--steel); line-height: 1.75; margin-bottom: 14px; }
.modal .modal-soon {
    margin-top: 22px;
    padding: 22px;
    border: 1px dashed var(--line-2);
    border-radius: var(--radius);
    background: var(--bg-alt);
    text-align: center;
    font-size: 14px;
    color: var(--steel-2);
}
.modal-close {
    position: absolute;
    top: 16px; right: 16px;
    width: 38px; height: 38px;
    display: flex; align-items: center; justify-content: center;
    border: none;
    border-radius: 50%;
    background: var(--bg-alt);
    color: var(--ink);
    cursor: pointer;
    transition: background 0.2s;
}
.modal-close:hover { background: var(--line); }

@media (max-width: 860px) {
    .why-grid { grid-template-columns: 1fr 1fr; }
    .module-grid { grid-template-columns: 1fr 1fr; }
    .modal { padding: 36px 24px 30px; }
}
@media (max-width: 540px) {
    .why-grid { grid-template-columns: 1fr; }
    .module-grid { grid-template-columns: 1fr; }
}

/* ============================================================
   News (listing + article) & Project cases
   ============================================================ */
.news-tabs { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 40px; border-bottom: 1px solid var(--line); }
.news-tab { padding: 10px 20px; margin-bottom: -1px; border: none; background: transparent; font-size: 14px; font-weight: 600; color: var(--steel); cursor: pointer; border-bottom: 2px solid transparent; transition: color .2s, border-color .2s; }
.news-tab:hover { color: var(--ink); }
.news-tab.active { color: var(--blue); border-bottom-color: var(--blue); }

.news-list { display: flex; flex-direction: column; gap: 24px; }
.news-item { display: grid; grid-template-columns: 300px 1fr; gap: 28px; align-items: center; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: #fff; transition: border-color .3s, box-shadow .3s var(--ease), transform .3s var(--ease); }
.news-item:hover { border-color: var(--line-2); box-shadow: var(--shadow); transform: translateY(-3px); }
.news-item .thumb { align-self: stretch; min-height: 200px; background-size: cover; background-position: center; }
.news-item .body { padding: 26px 30px 26px 0; }
.cat-tag { display: inline-block; font-size: 11px; font-weight: 700; letter-spacing: 1px; text-transform: uppercase; color: var(--blue); background: var(--blue-light); padding: 4px 10px; border-radius: 3px; margin-bottom: 12px; }
.news-item h3 { font-size: 20px; font-weight: 700; letter-spacing: -.3px; line-height: 1.3; margin-bottom: 10px; color: var(--ink); }
.news-item .excerpt { font-size: 14px; color: var(--steel); line-height: 1.65; margin-bottom: 16px; }
.news-meta { display: flex; align-items: center; justify-content: space-between; }
.news-meta .date { display: inline-flex; align-items: center; gap: 6px; font-size: 12.5px; color: var(--steel-2); font-family: var(--font-num); }
.news-meta .more { font-size: 13px; font-weight: 600; color: var(--blue); }

.article { max-width: 820px; margin: 0 auto; }
.article-title { font-size: clamp(26px, 4vw, 40px); font-weight: 800; letter-spacing: -.8px; line-height: 1.2; margin: 14px 0 16px; }
.article-meta { display: flex; align-items: center; gap: 12px; font-size: 13px; color: var(--steel-2); margin-bottom: 30px; }
.article-meta .date { display: inline-flex; align-items: center; gap: 6px; font-family: var(--font-num); }
.article-meta .sep { color: var(--line-2); }
.article-hero { aspect-ratio: 16/9; border-radius: var(--radius); background-size: cover; background-position: center; margin-bottom: 34px; }
.article-body p { font-size: 16px; color: var(--steel); line-height: 1.85; margin-bottom: 22px; }
.article-foot { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 40px; padding-top: 30px; border-top: 1px solid var(--line); }

.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.case-tile { position: relative; aspect-ratio: 4/3; border-radius: var(--radius); overflow: hidden; }
.case-tile .photo { position: absolute; inset: 0; background-size: cover; background-position: center; filter: grayscale(.35) brightness(.9); transition: transform .7s var(--ease), filter .5s var(--ease); }
.case-tile::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 40%, rgba(14,15,19,.9)); }
.case-tile:hover .photo { transform: scale(1.07); filter: grayscale(0) brightness(1); }
.case-tile .cap { position: absolute; left: 0; right: 0; bottom: 0; padding: 22px; z-index: 2; color: #fff; }
.case-tile .cap h4 { font-size: 17px; font-weight: 700; letter-spacing: -.2px; margin-bottom: 4px; }
.case-tile .cap span { font-size: 12.5px; color: rgba(255,255,255,.72); }

@media (max-width: 860px) {
    .case-grid { grid-template-columns: repeat(2, 1fr); }
    .news-item { grid-template-columns: 210px 1fr; gap: 20px; }
    .news-item .body { padding: 20px 22px 20px 0; }
}
@media (max-width: 600px) {
    .case-grid { grid-template-columns: 1fr; }
    .news-item { grid-template-columns: 1fr; }
    .news-item .thumb { aspect-ratio: 16/9; min-height: 0; }
    .news-item .body { padding: 4px 22px 24px; }
    .news-tab { padding: 9px 12px; font-size: 13px; }
}